AD9845 Analog Devices, AD9845 Datasheet - Page 15

• Manufacturer Part Number: AD9845
• Description: Complete 12-Bit 30 MSPS CCD Signal Processor
• Manufacturer: Analog Devices

D10
0
D10
X
Set to one.
Must be set to zero.
SDATA
SDATA
SCK
SCK
D9 D8 D7 D6
0
NOTES:
1. ANY NUMBER OF ADJACENT REGISTERS MAY BE LOADED SEQUENTIALLY, BEGINNING WITH THE LOWEST ADDRESS AND INCREMENTING ONE ADDRESS AT A TIME.
2. WHEN SEQUENTIALLY LOADING MULTIPLE REGISTERS, THE EXACT REGISTER LENGTH (SHOWN ABOVE) MUST BE USED FOR EACH REGISTER.
3. ALL LOADED REGISTERS WILL BE SIMULTANEOUSLY UPDATED WITH THE RISING EDGE OF SL.
SL
SL
MSB
D9
0
1
1
0
RNW
RNW
0
0
1
1
1
D8
0
1
1
A0 A1
0
A0
2
0
2
0
0
3
A1
A2
0
0
3
4
A2
0
Optical Black Clamp
D5
0 Enable Clamping
1 Disable Clamping
D7
0
1
1
1
4
5
D0
OPERATION
6
0
Table III. VGA Gain Register Contents (Default Value x096)
11 BITS
Table II. Operation Register Contents (Default Value x000)
5
...
...
D0
6
D6
1
1
1
D10 D0
16
D1
7
ACG GAIN
17
10 BITS
PxGA GAIN0
D2
...
...
8
D5
0
•
•
•
1
1
D9
D3
26
9
CLAMP LEVEL
D0
27
D4
Reset
D4
0 Normal
1 Reset All Registers
8 BITS
10
to Default
...
...
D5
D4
1
1
1
11
D7
34
D0
D0
12
35
CONTROL
10 BITS
D1
...
...
13
D3
1
1
1
D9
PxGA GAIN1
D2
44
14
PxGA GAIN0
D0
45
D3
6 BITS
15
Power-Down Modes
D3 D2
0
0
1
1
...
...
D2
1
1
1
D4
D5
16
0 Normal Power
1 Fast Recovery
0 Standby
1 Total Power-Down
50
PxGA GAIN1
D0
D5
51
17
6 BITS
...
D1
1
1
1
...
D0
PxGA GAIN2
18
D5
56
...
PxGA GAIN2
...
D0
57
6 BITS
D5
LSB
D0
1
0
1
...
23
...
D5
D0
62
PxGA GAIN3
24
Channel Selection
D1 D0
0
0
1
1
D0
PxGA GAIN3
63
AD9845A
...
...
6 BITS
...
0
1
0
1
Gain (dB)
2.0
•
•
•
35.965
36.0
...
...
...
D5
29
CCD Mode
AUX1 Mode
AUX2 Mode
Test Only
D5
68